Analytical study about the impact of multipath propagation on UHF-RFID ranging techniques

Author

Kirsch, F. ; Miesen, R. ; Vossiek, Martin

Author_Institution

Inst. of Microwaves & Photonics (LHFT), Univ. of Erlangen-Nuremberg (FAU), Erlangen, Germany

fYear

2012

fDate

11-16 Nov. 2012

Firstpage

1

Lastpage

4

Abstract

Given the narrow bandwidth of UHF-RFID it is not possible to separate the different signal paths apart. In this paper the SNR was derived, necessary for any nonlinear super-resolution algorithms. As long as these SNR levels are not met, any evaluation method will give a weighted mean of all the individual paths that exist in the perceived channel. Evaluation methods that use only one of “RSSI” and “phase” will even be worse. In order to open the possibilities of multipath resistant single-antenna ranging to the field of UHF-RFID applications new regulations or technologies with greater bandwidths are unavoidable.

Keywords

UHF antennas; radiofrequency identification; radiowave propagation; wireless channels; RSSI; SNR level; UHF-RFID ranging technique; channel; multipath propagation; multipath resistant single-antenna ranging; nonlinear super-resolution algorithm; signal path; Bandwidth; Baseband; Distance measurement; Radiofrequency identification; Reflection coefficient; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Information Technology and Systems (ICWITS), 2012 IEEE International Conference on

Conference_Location

Maui, HI

Print_ISBN

978-1-4673-0947-9

Type

conf

DOI

10.1109/ICWITS.2012.6417803

Filename

6417803